Differentiate between the problems and effects of global warming and ozone depletion. What will be an ideal response?
Global warming occurs due to the buildup of greenhouse gases which absorb infrared radiation and
thus slow the flow of heat from the Earth into the atmosphere. Probable effects include a rise in sea
level, changes in precipitation patterns, changes in the ranges of organisms, changes in patterns of
agriculture, and deleterious effects on human health.
Ozone depletion is due to the buildup of certain bromine- and chlorine-containing substances
(particularly CFCs) in the atmosphere. These compounds react with UV radiation, releasing chlorine
or bromine which breaks ozone molecules apart. Because ozone shields the Earth from much of the
UV radiation from the sun, depletion of the ozone layer results in an increase in the amount of UV
radiation hitting the Earth’s surface. Probably effects include an increase in the mutation rate, an
increase in human health problems (such as cataracts, skin cancer, and a weakened immune system),
and damage to ecosystems (such as reduced productivity of phytoplankton, damage to fish, and
damage to crops and forests).
You might also like to view...
Drugs that are more effective when taken together are called
A. energetic. B. antagonistic. C. subtractive. D. synergistic.
Buffers can increase the pH of a solution when acids are added
Indicate whether the statement is true or false.
In a leaf, where are the most chloroplasts
found?
a. the phloem b. the palisade mesophyll c. the spongy mesophyll d. the upper epidermis e. stomata
Why do we have storage macromolecules, such as fats, in our bodies?
A. Macromolecules, such as fats, are a convenient way to store kinetic energy. B. We can break down these macromolecules to provide energy for the endergonic reactions in our bodies. C. Breaking down macromolecules, such as fats, is an endergonic process. D. Human cells can directly capture the energy of sunlight through photosynthesis and store it as macromolecules such as fats.